Buggy code:
@ SuppressWarnings ( "serial" ) public class QueryImpl < X > implements Serializable , OpenJPAQuerySPI < X > { private static final Localizer _loc = Localizer . forPackage ( QueryImpl . class ) ; private DelegatingQuery _query ; private transient EntityManagerImpl _em ; private transient FetchPlan _fetch ; private Map < Parameter < ? > , Object > _boundParams ; private Map < Object , Parameter < ? > > _declaredParams ; private String _id ; private transient ReentrantLock _lock = null ; private HintHandler _hintHandler ; public QueryImpl ( EntityManagerImpl em , RuntimeExceptionTranslator ret , Query query ) { } public QueryImpl ( EntityManagerImpl em , Query query ) { } public javax . persistence . Query getDelegate ( ) { } public OpenJPAEntityManager getEntityManager ( ) { } public String getLanguage ( ) { } public QueryOperationType getOperation ( ) { } public FetchPlan getFetchPlan ( ) { } public String getQueryString ( ) { } public boolean getIgnoreChanges ( ) { } public OpenJPAQuery < X > setIgnoreChanges ( boolean ignore ) { } public OpenJPAQuery < X > addFilterListener ( FilterListener listener ) { } public OpenJPAQuery < X > removeFilterListener ( FilterListener listener ) { } public OpenJPAQuery < X > addAggregateListener ( AggregateListener listener ) { } public OpenJPAQuery < X > removeAggregateListener ( AggregateListener listener ) { } public Collection < ? > getCandidateCollection ( ) { } public OpenJPAQuery < X > setCandidateCollection ( Collection coll ) { } public Class getResultClass ( ) { } public OpenJPAQuery < X > setResultClass ( Class cls ) { } public boolean hasSubclasses ( ) { } public OpenJPAQuery < X > setSubclasses ( boolean subs ) { } public int getFirstResult ( ) { } public OpenJPAQuery < X > setFirstResult ( int startPosition ) { } public int getMaxResults ( ) { } public OpenJPAQuery < X > setMaxResults ( int max ) { } public OpenJPAQuery < X > compile ( ) { } Map < Object , Object > getParameterValues ( ) { } private Object execute ( ) { if ( ( ! ( isNative ( ) ) ) && ( ( _query . getOperation ( ) ) != ( QueryOperations . OP_SELECT ) ) ) throw new InvalidStateException ( QueryImpl . _loc . get ( "not-select-query" , getQueryString ( ) ) , null , null , false ) ; try { lock ( ) ; Map params = getParameterValues ( ) ; boolean registered = preExecute ( params ) ; Object result = _query . execute ( params ) ; if ( registered ) { postExecute ( result ) ; } return result ; } catch ( LockTimeoutException e ) { <START_BUG> throw new QueryTimeoutException ( e . getMessage ( ) , new Throwable [ ] { e } , getQueryString ( ) , e . isFatal ( ) ) ; <END_BUG> } finally { unlock ( ) ; } } public List getResultList ( ) { } public X getSingleResult ( ) { } public int executeUpdate ( ) { } private static int asInt ( long l ) { } public FlushModeType getFlushMode ( ) { } public OpenJPAQuery < X > setFlushMode ( FlushModeType flushMode ) { } public boolean isNative ( ) { } void assertJPQLOrCriteriaQuery ( ) { } public OpenJPAQuery < X > closeAll ( ) { } public String [ ] getDataStoreActions ( Map params ) { } public LockModeType getLockMode ( ) { } public TypedQuery < X > setLockMode ( LockModeType lockMode ) { } public int hashCode ( ) { } public boolean equals ( Object other ) { } public Map < String , Object > getHints ( ) { } public OpenJPAQuery < X > setHint ( String key , Object value ) { } public Set < String > getSupportedHints ( ) { } public < T > T unwrap ( Class < T > cls ) { } private boolean preExecute ( Map params ) { } private boolean postExecute ( Object result ) { } boolean invalidatePreparedQuery ( ) { } void ignorePreparedQuery ( ) { } QueryImpl setId ( String id ) { } void lock ( ) { } void unlock ( ) { } public OpenJPAQuery < X > setParameter ( int pos , Object value ) { } public OpenJPAQuery < X > setParameter ( int position , Calendar value , TemporalType t ) { } public OpenJPAQuery < X > setParameter ( int position , Date value , TemporalType type ) { } Object convertTemporalType ( Date value , TemporalType type ) { } Object convertTemporalType ( Calendar value , TemporalType type ) { } public boolean hasPositionalParameters ( ) { } public Object [ ] getPositionalParameters ( ) { } int calculateMaxKey ( Set < Integer > p ) { } public OpenJPAQuery < X > setParameters ( Object ... params ) { } void clearBinding ( ) { } public Map < String , Object > getNamedParameters ( ) { } public OpenJPAQuery < X > setParameters ( Map params ) { } public < T > Parameter < T > getParameter ( String name , Class < T > type ) { } public < T > Parameter < T > getParameter ( int pos , Class < T > type ) { } public < T > T getParameterValue ( Parameter < T > p ) { } public Set < Parameter < ? > > getParameters ( ) { } public < T > OpenJPAQuery < X > setParameter ( Parameter < T > p , T arg1 ) { } public OpenJPAQuery < X > setParameter ( Parameter < Date > p , Date date , TemporalType type ) { } public TypedQuery < X > setParameter ( Parameter < Calendar > p , Calendar cal , TemporalType type ) { }

Fix:
throw new QueryTimeoutException ( e . getMessage ( ) , new Throwable [ ] { e } , this ) ;